title: [Comparison of resting energy expenditure determined by indirect calorimetry and estimated by predictive formulas in women with obesity degrees I to III].
abstract: BACKGROUND
  The determination of resting energy expenditure (REE) is calculated in clinical practices by predictive formulas; however the result varies among the population due to several factors.
  
  
  OBJECTIVE
  To compare the REE determination by indirect calorimetry and by Harris-Benedict (HB), Mifflin (MF), World Health Organization (WHO), Institute of Medicine (IOM), "Formula Rápida" (FR) and Valencia (VA) formulas, in women with obesity grades I to III.
  
  
  METHODS
  Mexican mestizo adult women were included in the study and stratified in three groups according to their body mass index (BMI). Grade I obesity (BMI 30.0-34.9, n = 42), grade II (BMI 35.0-39.9, n = 38) and grade III (BMI > 40, n = 41). REE was determined by indirect calorimetry and by the aforementioned equations. Kruskal-Wallis ANOVA and Dunn test were used for statistical comparison and p < 0.05 was accepted as a statistical difference.
  
  
  RESULTS
  There were no statistical difference between the REE values estimated by formulas HB, WHO and VA regarding the CI. The accuracy obtained from these formulas was 63%, 67% and 64%, respectively, when data were analyzed in a single group. The IOM, ER and MF formulas showed statistically significant difference versus the CI and their accuracy were 58%, 53%, and 54%, respectively. In grade III obesity VA (78%) and FR (71%) accuracy were the highest obtained.
  
  
  CONCLUSIONS
  HB, WHO and VA formulas were the best to estimate REE in Mexican women with BMI > 30. In obesity grade III FR and VA formulas showed the best performance.
authors.affiliation: Departamento de Salud, Universidad Iberoamericana Ciudad de México, México.
authors.forename: Alicia
authors.initials: A
authors.lastname: Parra-Carriedo
authors.forename: Loren
authors.initials: L
authors.lastname: Cherem-Cherem
authors.forename: Daniela
authors.initials: D
authors.lastname: Galindo-De Noriega
authors.forename: Mary Carmen
authors.initials: MC
authors.lastname: Díaz-Gutiérrez
authors.forename: Ana Bertha
authors.initials: AB
authors.lastname: Pérez-Lizaur
authors.forename: César
authors.initials: C
authors.lastname: Hernández-Guerrero
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D000704:Analysis of Variance; D000886:Anthropometry; D015992:Body Mass Index; D002153:Calorimetry, Indirect; D004734:Energy Metabolism / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008800:Mexico; D008875:Middle Aged; D009765:Obesity / Q000378:metabolism*; D009767:Obesity, Morbid; D055815:Young Adult